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Audis bio-fuel initiative is expanding into France through an investment by the automaker to Global Bioenergies, whose bio-isooctane could be the replacement for petroleum gasoline when the time comes to make the switch.
The bio-fuel is made from fermented sugar through genetic modification of E. coli bacteria to produce isobutane gas without poisoning the yeast utilized in the fermentation, an issue currently experienced in ethanol production. The longer-lasting process works with feedstocks like corn and sugarcane as well as straight sugar, and can also be adapted to use biomass such as high glucose wood chips.
At the pump, bio-isooctane can go directly into a vehicle without modification to the engine and fuel-delivery system, or can be blended with petrogasoline in the same manner as E15 and E85. The biogasoline may also come with a lower price per gallon or litres, as the fuel can be produced much quicker and cheaper than ethanol and other bio-fuels.
For the moment, Global Bioenergies is building two working proof-of-concept production plants in Germany and France, whose total annual output is expected to be 100,000 litres. Audis investment will be used to help in the rollout of the new fuel as part of the automakers branded e-fuel strategy, with bio-isooctane completing the triad with Audis investments in ethanol and biodiesel for their kompletan lineup of vehicles.